Make Exchange 2010 coexist with Exchange 2003 in the same domain

Useful links:

http://www.jesswatts.com/it/exchange-owa-redirect

http://www.ipsure.com/blog/2011/outlook-web-app-access-in-an-exchange-2010-%E2%80%93-exchange-2003-coexistence-scenario/

Raise Forest (Domain) Functional Level - Exchange 2003

- Log into DC machine.
- Start -> Administrative Tools -> Active Directory Domains and Trusts
- Right-click on Active Directory Domains and Trusts -> Raise Forest Functional Level...

- Right-click on domain name -> Raise Domain Functional Level...

Use Proxy Server in your browser

Here is a link with free Proxy Server IPs you can use in your browser:
http://www.samair.ru/proxy/ip-address-01.htm

Here are the settings you need to do for different browsers:

1. Internet Explorer and Chrome: [Tools ->] Options -> Connections:

2. Firefox: Tools -> Options -> Advanced -> Network -> Settings: